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    <title>Bootstrap 脚本研究</title>
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    (function ($) {
        'usr strict';

        function _defineProperties_old(target, props) {
            for (var i = 0; i < props.length; ++i) {
                var descriptor = props[i];
                descriptor.enumerable = descriptor.enumerable || false;
                descriptor.configurable = true;
                if ("value" in descriptor) descriptor.writable = true;
                Object.defineProperty(target, descriptor.key, descriptor);
            }
        }

        function _defineProperties(target, props) {
            for (var descriptor of props) {
                descriptor.enumerable = descriptor.enumerable || false;
                descriptor.configurable = true;
                if ("value" in descriptor) descriptor.writable = true;
                Object.defineProperty(target, descriptor.key, descriptor);
            }
        }

        function _createClass(Constructor, protoProps, staticProps) {
            if (protoProps) _defineProperties(Constructor.protoProps, protoProps);
            if (staticProps) _defineProperties(Constructor, staticProps);
            return Constructor;
        }

        function _extends() {
            _extends = Object.assign || function (target) {
                for (var i = 1; i < arguments.length; ++i) {
                    var source = arguments[i];
                    for (var key in source) {
                        if (Object.prototype.hasOwnProperty.call(source, key)) {
                            target[key] = source[key];
                        }
                    }
                }
                return target;
            }

            return _extends.apply(this, arguments);
        }

        console.log('s');
    }($));
</script>

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